Emil bruno metrowitz



(No Model.) 7 E. B. MEY ROWITZ.

OPERA GLASS HOLDER.

No. 412.774. Patented Oct. 15. 1889.

jljnl I rd e WITNESSES: nvmvron EMU. BRUNO MEYRO'WITZ M mm. 6M

ATTORNEY UNITED STATES,

PATENT O FI EMIL BRUNO MEYROWITZ, .OF RIDGEFIELD, NEW JERSEY, ASSIGNOR TO LEVY, DREYFUS & 00., OF NEW YORK, N. Y.

OPERA-GLASS HOLDER.

SPECIFICATION forming part of Letters Patent No. 412,774, dated October 15, 1889. Application filed December 21,1888. filerial No. 294,298- (No model.)

for producing a holder permitting easy and eifective adjustment of parts to and from a cross-bar of the opera-glass while afiordinga rigid support therefor.

In the accompanying drawings, Figure 1 represents a front view of an opera-glass holder embodying my invention as it appears when applied to an opera-glass. Fig. 2 represents a vertical longitudinal section thereof. Fig. 3 represents a side view thereof, showing also a portion of the opera-glass. Fig. 4 represents a cross-section thereof on the line as as, Fig. 2.

Similar letters of reference indicate corresponding parts.

The letter A. indicates a bridge or cross bar connecting together the barrels B B of the opera-glass in the usual manner.

C O are two jaws, and D a handle,- constituting my opera-glass holder. On the inner face of the jaws C C, respectively, is a groove .9 (see Fig. 3) for adapting said jaws to grasp the cross-bar A, which may be the front or rear bar of the opera-glass, between them, and

the upper jaw G is'secured to one end of a non-rotating screw-rod e, which extends through the lower jaw 0 into the handle D, said lower j aw and the handle being made hollow for that purpose. Said grooves s of the two jaws O O are parallel and at points opposite to each other, and the bases of the two grooves are beveled or inclined in reverse directions, as shown, so that the bar A may be readily inserted in the grooves, while it is firmly retained therein irrespective of the thickness of the metal of which the bar is composed, inasmuch as said inclined bases of the grooves accommodate themselves to bars of difierent thicknesses. Intermediate of the lower jaw O and the adjacent end of the handle D is a screw-nut F, which is fitted on the screw rod e, and from said lower jaw to the handle extend side arms G, two (more or less) in number, whereby it is fixed to the handle in contradistin ction from the other or upper jaw, which is movable, said nut being at the same time firmly retained between the fixed jaw and the handle endwise of the screw-rod. Thus it will be seen that when the nut F is turned in one or the other direction the upper jaw O is moved toward or away from the lower jaw O by the action of said nut on the screw-rod e, and hence the cross-bar A of the opera-glass may be readily clamped between the j awsnamely, by adjusting the edge of said bar in the grooves s-with the effect of firmly attaching the holder to the opera-glass for sustaining the latter in the desired position or releasing said bar, as the case may be.

For the purpose of holding the screw-rod e against rotating it is made square and fitted with a corresponding socket e in the handle D, as more clearly shown in Fig. 4; but it is evident that this purpose may be effected in other ways.

The handle D is preferably made in sections, which may telescope one within the other, or may be hinged to fold upon each other.

I am aware that it is common to construct a monkey-wrench with a screw rod and nut for adjusting the movable jaw of the wrench, and I do not claim such as my invention, the essential feature of which is the inclined groove on the inner face of the jaws O C for adjusting the latter to firmly grasp a crossbar, asvA, of any general thickness.

What I claim as new, and desire to secure by Letters Patent, is-=- In an opera-glass holder, two jaws, one fixed and the other movable, adapted to grasp a cross-bar of the opera-glass, the inner faces of said jaws having grooves parallel and 0phandle, substantially as and for the purpose posite to each other with their bases inclined described.

in reverse directions, to receive said bar a j non-rotating screw-rod carrying the movable EMIL BRUNO MEYROVITZ' 5 jaw, a handle, a screw-nut on said rod in- W'itnesses:

termediate of the fixed jaw and the handle, FRANCIS C. BOWEN,

and side arms connecting the fixed jaw and JAMES S. EWBANK. 

